{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "455179560",
    "entityType": "User",
    "nonce": "0x0f2861842ed67443de51eaad6add7a448cd6bdb6f9db3199af043c5300d7ea8c",
    "signature": "0xa1ad5415b1520a04a6862fc1b1379fe23a02f65dadb0fd38377ea61d890f7d2b3cbdf34a1b95e9e8a8e9a0982fc877b3737b7c59a35d8d44a3c6ac3428df0c2b1b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}